Canine Astrovirus: An Emerging Cause of Viral Enteritis in Puppies"
Introduction Canine Astrovirus (CaAstV), also known as Small Virus, is a small, non-enveloped, single-stranded RNA virus . It is often present in co-infections with Parvovirus or Coronavirus and is one of the main culprits in the Canine Infectious Diarrhea Complex . It is also one of the oldest viruses but still considered a "sneaky" disease that owners often do not even think of. the name "Astrovirus" comes from the Greek word 'astron' , meaning star, because of its shape under a microscope. Transmission and Pathogenesis Canine Astrovirus is mainly spread by the fecal-oral method . Once it is ingested, it infects the mature enterocyte cells located at the tips of the microvilli in the intestine, leading to: Malabsorption Osmotic Diarrhea Villous Atrophy (shortening of the microvilli) Clinical Signs It is often subclinical in adult dogs but in puppies or immunocompromised dogs, the symptoms include: Watery Diarrhea Vomiting Lethargy and Anorexia Growth ...